Guaranteed strength and beauty Combines eye catching aesthetics with sturdy stainless steel construction thats backed by Yales 20 year guarantee. Includes inside and outside plates that join with telescopic sleeve for tight fit to door. The exterior plate features a foam weather seal while the interior plate is fitted with a nylon brush to reduce draughts. Both inside and outside flaps are sprung and open to 180 allowing easier posting of larger items. Features & Benefits Hard wearing and UV stable PVD Gold and Polished Chrome finishes Weather and wind proof insulating brush strip and gaskets 180 opening for easy posting sprung flap inside and out Fits doors perfectly available for 2040mm or 4080mm thickness Stainless Steel construction external parts are Marine grade 316 Attractive modern design compliments other Platinum series products Fixings supplied comes with M6 thrufix machine screws Guaranteed for 20 Years long mechanical and surfac...